A new stripper for removing the solder from the surface of waste printed circuit boards was developed on the basis of a nitric acid - sulfonicacidtype tin stripper.
以硝酸-磺酸型退锡剂为基础配方，研制了一种脱除废旧电路板表面残留焊锡的剥离液。
2
As a solid electrolyte, followed the PEFC (polymer solid electrolyte type fuel cell) for general use category of perfluorinated sulfonicacid polymer.